20331443446 has 16 divisors (see below), whose sum is σ = 31827923424. Its totient is φ = 9722268864.

The previous prime is 20331443443. The next prime is 20331443467. The reversal of 20331443446 is 64434413302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331443443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 314386 + ... + 373498.

It is an arithmetic number, because the mean of its divisors is an integer number (1989245214).

Almost surely, 2^20331443446 is an apocalyptic number.

20331443446 is a deficient number, since it is larger than the sum of its proper divisors (11496479978).

20331443446 is a wasteful number, since it uses less digits than its factorization.

20331443446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66615.

The product of its (nonzero) digits is 82944, while the sum is 34.

Adding to 20331443446 its reverse (64434413302), we get a palindrome (84765856748).

The spelling of 20331443446 in words is "twenty billion, three hundred thirty-one million, four hundred forty-three thousand, four hundred forty-six".